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Safety Precautions and Warnings

WARNING: Read and understand all instructions in this manual.
Use appropriate personal safety equipment including hearing and eye
protection when using the scanner in or near the vehicle engine
compartment. Failure to comply can result in accidents involving fire,
electrical shock, or serious personal injury.

Electrical

Do not allow anything to rest on the cable assembly. Do not allow
the cable assembly to be pinched. Keep the cable assembly away
from contact with heat, oil, sharp edges, or moving parts. Replace
damaged cables immediately. Damaged cables increase the risk of
electric shock.

To reduce the risk of electrical shock do not disassemble the scanner.
There are no user repairable components inside the unit.
Please dispose of used batteries properly. Do not incinerate batteries.
Consult your local waste authority for information regarding available
recycling and/or disposal options.

Use and Care

Stay alert, pay attention to what you are doing, and use common
sense when operating the scanner. Several operational tests require
the engine in the vehicle to be running during testing. Keep all
children and visitors a safe distance from the work area.
Keep the scanner dry, clean, and free from oil and grease. Use a
mild detergent on a clean cloth to wipe the outside of the scanner,
when necessary.

Only use accessories that are recommended by AutoXray.
Certain capture mode tests can be performed while driving the
vehicle. AutoXray recommends that the person operating the vehicle
does not use/view the scanner. Always use an assistant to operate
the scanner while driving the vehicle.

Service

Service must only be performed by AutoXray repair personnel. Service or
repair by unqualified personnel may result in risk of injury, damage to the
unit, and may void your warranty. Refer to the Product Warranty Policy
section of this manual.

Page 2

Table of Contents

Safety Precautions and Warnings 2

Table of Contents 3

Introduction 5

Setup / Operating Instructions 8

SCAN - GM OBD-I, Chrysler OBD-I

SCAN 14

DATA - GM OBD-I, Chrysler OBD-I

View the Data 16

Real Time Data Monitoring 17

View Trouble Codes 19

Clear the Codes 20

Reset EMR Lamp-Chrysler (1989-95) 21

MON - GM OBD-I, Chrysler OBD-I
Capture Mode 22

SCAN - Ford - OBD-I

SCAN the KOEO Codes - Ford 25

SCAN the KOER Codes - Ford 27

SCAN the DCL Data - Ford 30

DATA - Ford - OBD-I

View the KOEO Codes - Ford 31

View the Memory (Trouble) Codes - Ford 33

View the KOER Codes - Ford 34

View the DCL Data - Ford 35

Clear Trouble Codes - Ford 37

MON - Ford - OBD-I

Activate the Wiggle Test - Ford 38

DCL Data Capture - Ford 40

Troubleshooting
What to do When the Scanner Displays a Fault/Trouble Code. ..43

What to do for a "Vehicle Is Not Responding" Message 43

Screen Contrast Problems 44

Page 3

Table of Contents (cont.)

Operational Data Items

GM Operational Data Items

Ford Operational Data Items

Chrysler Operational Data Items ....

Product Warranty Policy

Additional Products / Accessories

45
59
62

Registration Card

Please complete the enclosed Registration Card and return it, or
call 480.804.1673. It is the only way AutoXray can notify you of
future updates / upgrades for your scanner.
Thank You for buying the EZ-SCAN Scanner from AutoXray, the
leading provider in cost effective automotive diagnostic scanners.

Page 4

Introduction

RJ45 Serial Connection Port AMP Vehicle

Figure 1 . EZ-SCAN Scanner

• AutoXray designed this elegant EZ-SCAN tool with capabilities
that are the best value on the market today. The compact
design has received proprietary patents and makes these
scanners so simple and easy to use.

Page 5

Introduction (cont.)

Your EZ-SCAN Scanner Will:

• Scan and Collect Values from Vehicles On-Board Computer

• Display On-screen definitions of OBD I trouble codes

• Monitor Live Data Stream

• 29 Frame Capture Mode

• Reset Check Engine Lights

AutoXray has made sure your new scanner is computer safe.
It WILL NOT accidentally deploy airbags, change transmission
gears, affect ABS brake performance, or fire injectors and ignition
systems.

CHRYSLER OBD-I - (for 1983-1995 Chrysler SCI vehicles and
1991-1995 Jeep vehicles)

Resets Engine Maintenance Reminder (EMR) Light

FORD OBD-I - (for 1983-1995 Ford EEC-IV vehicles)

• Performs Key-On Engine Off (KOEO)
Key-On Engine Running (KOER) tests

• Continuous monitor (wiggle) test
DCL Monitoring

GM OBD-I - (for 1 982-1 995 GM 1 2 pin ALDL vehicles)

Page 6

Introduction (cont.)

Text Styles Used In This Manual

POWER text in this font is used to designate a

button/key on the front of the scanner

Conf ig Unit text in this font is used to designate text that is
displayed on the scanner screen

WARNING: the word WARNING in this font is used to

identify an operation or activity that could cause
severe property damage or personal injury

CAUTION: the word CAUTION in this font is used to

identify an operation or activity that could cause
property damage or personal injury

NOTE: the word NOTE in this font is used to identify

information that will assist you while you are
using the scanner

Arrows will be displayed at the right side of the screen to indicate
text above and/or below the current screen. Use the arrow keys to
view the text.

NOTE: During the procedures in this manual, display all the available menu

options by using the ▲ and T arrow keys. Small arrows will be displayed
on the screen when there are more options available.

Page 7

Setup/Operating Instructions

This section gives the information you need to set up and operate
your EZ-SCAN Scanner:

Install New Batteries

Configure the Scanner for Your Vehicle

Connect the Scanner to Your Vehicle

. Install New Batteries

The EZ-SCAN Scanner is powered by 4 AA batteries.
Before the scanner is used the first time, you need to
install batteries in the unit.

Make sure the batteries are put in according to the diagram on the
back of the battery compartment. Refer to the illustration below.

Figure 2. Battery Compartment

If the screen becomes too dim to view, the batteries need to be
replaced. Replace all four batteries to avoid unit malfunction.
When it is time to change the batteries, the Data Holder
Feature will save all Data and configuration information if fresh
batteries are installed immediately after removing the old ones.

CAUTION: Leaving used or dead batteries in the scanner
beyond the battery date may result in damage to the unit.

Page 8

Setup/Operating Instructions (cont.)

• As long as good batteries are in the scanner, the vehicle engine
configuration and data will remain in the scanner's memory,
even after the unit is powered off.

• Operational data, Trouble Codes, and all remaining scanned
information will remain in memory until the unit is reconfigured.
A Power Miser Feature automatically powers the unit OFF
after 30 minutes of no activity.

Configure the Scanner for Your Vehicle

j.j Before the scanner is used, it must be configured for your
specific vehicle. Don't worry, it only takes a few steps.

1. Press POWER to turn the unit ON, then press CONFIG.

2. Make sure 1 -Conf ig Unit is displayed on the screen, then
press ENTER.

3. Use the arrow keys until the correct vehicle

manufacturer name is highlighted, then press ENTER to select it.

4. Use the arrow keys to select the year of the vehicle, then press
ENTER.

5. Use the arrow keys to highlight the number that matches the 8th
Character from the VIN code on the vehicle. Press ENTER to
select the proper character.

6. Depending on the vehicle selected, you may be asked some
additional questions to complete the configuration process. Use
the arrow keys to highlight the correct answer, then press
ENTER to select it.

Page 9

Setup/Operating Instructions (cont.)

Set the Time Units for Capture Mode

The EZ-SCAN scanner can be set up to capture a user defined
length of time while in Capture Mode. The default setting is 1000
ms (1 sec) per frame.

1. To change the Capture Time, press CONFIG from the initial
screen.

2. Use the ▲ and t arrow keys until 2 -System Conf ig is
displayed, then press ENTER.

3. Use the ▲ and t arrow keys to select 2 -Capture Time,
then press ENTER.

4. Use the -4 and ► arrow keys to change Capture Time to
the desired number between 500 and 5000 ms, then press
ENTER to select the choice (or press the CONFIG Key to
Cancel and return to the initial screen).

NOTE: 500 milliseconds is one-half a second, 1000 milliseconds
is 1 second, and 5000 milliseconds is 5 seconds.

Adjust the Display Contrast and Backlight

The contrast on your EZ-SCAN scanner can be adjusted for easier
Viewing under different lighting conditions. Note, if scanner is left
in direct sunlight the Display can turn completely black. Should
this happen, put the scanner in a cool dark place for approx. 10 to
15 minutes. The display should return to normal.

1 . To adjust the contrast of the screen press CONFIG key.

2. Use the arrow keys until 2-System Config is displayed, then
press ENTER.

3. Use the arrow keys until 3-Contrast Adjust is displayed, then
press ENTER.

4. Use the -4 and ► arrow keys to adjust desired screen contrast

Page 1 0

Setup/Operating Instructions (cont.)

(Fine adjustment)

5. Use the ▲ and t arrow keys for course adjustment.

6. The MON key will toggle the backlight on/off. The default position
is ON and can be left that way however it will lessen the life of your
batteries.

7. Press the CONFIG or ENTER key to save settings and return to
the Opening screen.

NOTE: Not all Scanners support this feature.

Connect the Scanner to Your Vehicle

I The EZ-SCAN Scanner communicates with the computer
and sensors in your vehicle through a special connection
cable. The scanner cable is plugged into a connector on
the top of the scanner, and into a computer interface
connection in your vehicle.

Each vehicle manufacturer has its own specific computer
connection. Make sure that you have the proper EZ-SCAN scanner
cable for your vehicle - each one has a unique shape/color. In
addition, the name of the vehicle manufacturer is molded into the
connector body. Refer to the scanner cable assembly connectors
and applications shown on the next page.

Page 1 1

Setup/Operating Instructions (cont.)

GM Connector

Works with OBD-I 1982-1995
vehicles with a 12 pin ALDL.

Ford Connector

Works with OBD-I 1983-1995
Ford vehicles with EEC-IV
computers.

Chrysler Connector

Works with OBD-I 1983-1995
Chrysler vehicles with SCI
connectors

NOTE: An OBD-II manufacturer specific connector may be
necessary to work with some vehicles.
In some cases the vehicle manufacturer used a 16pin OBD-
II connector in vehicles using an OBD-I protocol.
A small percentage of vehicles in 94/95 manufactured by
GM and Ford may use this configuration.
To purchase this cable for $15.00 please call 800-593-9729.
Be sure to have your scanner available when calling.

Page 12

Setup/Operating Instructions (cont.)

1. Locate the vehicle computer connection:

• GM OBD-I vehicles, the connector is usually located under
the drivers side of the dashboard. On some vehicles, the
connector is located behind the kick panels, ashtray, or
radio.

• [Ford / Chrysler 83-95, OBD-I] The connector on Ford and
Chrysler vehicles is usually located in the engine
compartment, along the outside perimeter of the engine
compartment, or by the shock absorber towers.

NOTE: For additional connection location information, including
the "OBD Connector Locations Database," please look at
the Customer Support page on the AutoXray web site
(www. au tox ray. com).

2. Make sure that all the pins are straight and that the connecting
surfaces are free of oils, grease, and moisture.

CAUTION: Do not force the cable connector into the scanner or
into the vehicle computer connection.

3. Push the scanner cable and vehicle connectors together firmly.

• [Ford] The EEC-IV Ford connector has a trapezoid shaped
connector and a small square connector next to it. Make
sure both connectors are correctly plugged into the scanner
cable connector.

NOTE: Make sure the scanner cable and vehicle connectors are
always properly seated during all test procedures.

4. Insert the EZ-SCAN cable connector into the top of the scanner.

Page 13

SCAN - GM, Chrysler - OBD-I

Before You Start

• Before scanning a vehicle, the EZ-Scan 3000 scanner must
be correctly configured for your vehicle. Refer to "Setup /
Operating Instructions" on page 8 if you need to configure
the scanner.

Scanning the Vehicle

1. Press POWER to display the
EZ-Scan 3000 scanner opening
screen.

2. Turn the vehicle ignition key to
ON or start the engine.

3. Press SCAN.

• When the scanner is ready
to scan the vehicle,
ENTER to Scan will be
displayed on the screen.
Press ENTER to start
scanning the vehicle com-
puter/sensors. (Pressing
SCAN again will take the
unit out of Scan mode and
display the opening
screen.)

4. If there are Trouble Codes
stored, these codes can also
be viewed later.

Page 14

SCAN - GM, Chrysler - OBD-I (con't)

5. After the scanner has read all the
data from the vehicle, the Scan
Successful message will be
displayed on the screen.

If the scanner could not read all
the data from the computer or the
vehicle sensors, an error mes-
sage will be displayed.

View the Data - GM, Chrysler OBD-I

Before You Start

• Your vehicle must be scanned before viewing the data. If
DATA is pressed, and the vehicle has not been scanned,
the scanner will display Press the Scan key to Scan New
Data. Refer to "Scanning the Vehicle" on page 13.

The EZ-Scan 3000 scanner DOES NOT need to be connected to
the vehicle to view the scanned
data. The vehicle engine config-
uration and data will remain in
the scanner's memory until a
vehicle is scanned again. This
allows you to review the data at
a later time, or to use EZ-PC to
load the data into a computer.

Viewing the Data

1. If the EZ-Scan 3000 scanner
is not ON, press POWER to
display the opening screen.

2. Press DATA to display the
Data menu. Make sure 1 - Op
Data is highlighted, then
press ENTER.

3. Information from the comput-
er/sensors in your vehicle
(Operational Data Items) will
be displayed on the scanner
screen.

A reference number is dis-
played in the upper right

Page 1 6

I fi*-1 SLptBTl i

Q:ai Lap

Lced 1 lake

View the Data - GM, Chrysler OBD-I (cont.)

corner of the screen. (The total number of sensors and sensor
types will vary with each type of vehicle.)

NOTE: The -4 and ► arrow keys will step through the sensors
(1 at a time), and the ▲ and T arrow keys will page
through the sensors (10 at a time).

4. After viewing the scanned sensor

information, press DATA to exit Data mode and display the
opening screen.

Operational Data Items

To see a description of each of the Operational Data Items for your
vehicle, refer to the appropriate section on the following pages:

• "GM Operational Data Items" on page 45

• "Chrysler Operational Data Items" on page 62

Monitoring Real Time Data - GM, Chrysler OBD-I

1. Make sure the EZ-Scan 3000
scanner cable is correctly connect-
ed to the scanner and to the vehi-
cle, then press POWER.

2. Press DATA to display the Data
menu. Make sure 1 -Op Data is
highlighted, then press ENTER.

3. To toggle real-time monitoring ON
and OFF, press MON.

4. An Initializing screen will
be displayed while the scanner

Page 17

Monitoring Real Time Data - gm, Chrysler obd-i (cont.)

establishes a connection to the
computer/sensor.

5. When the connection has been
made, the reference number in
the upper right corner will begin
to flash.

NOTE: If the communication link
with the vehicle is broken
during Monitor mode, the
number in the upper right
corner will stop flashing.

6. Use the -4 and ► arrow keys to
step through the sensors (1 at a
time), and the ▲ and T arrow
keys to page through the sensors
(10 at a time) to view their real-
time data.

7. When you are done viewing real-
time data, press MON. The num-
ber in the upper right corner will
stop flashing.

8. Press DATA to exit Data mode
and display the opening screen.

FLel SL^ten 1

Lpai Lccp

FLel 3_Ftefii 2

HzA- y^po'ted

a;;

Load Hake

0,0-:

1 Cbplart Terip

Page 18

View Trouble Codes - GM, Chrysler OBD-I

Before You Start

• Your vehicle must be scanned before viewing trouble codes.
If DATA is pressed, and the vehicle has not been scanned,
the scanner will display Press the Scan key to
Scan New Data. Refer to "Scanning the Vehicle" on
page 14.

Viewing Trouble Codes

1. If the scanner is not ON,
press POWER to display the
opening screen. Then press
DATA.

2. Use the ▲ and T arrow
keys until 3-Trouble
Codes is highlighted, then
press ENTER.

3. If no Trouble Codes are in
the vehicle's computer, No
Trouble Codes Found
will be displayed.

If a Trouble Code is detected,
the fault and its description
will be displayed on the scan-
ner screen. The fault code
number will be displayed in the upper
left corner of the screen.

• A down arrow on the screen
indicates more information. Use
the ▲ and ▼ arrow keys to view
the additional text.

• Use the -4 and ► arrow keys to
view any other Trouble Codes.

Page 1 9

Clear the Codes - GM, Chrysler OBD-I

Before You Start

Clearing Trouble Codes will remove any Trouble Codes from
the vehicle's computer. You can use this feature to make
sure vehicle repairs were done correctly by doing a new
scan after clearing the codes.

• Your vehicle must be scanned before clearing trouble
codes. If DATA is pressed, and the vehicle has not been
scanned, the scanner will display Press the Scan
key to Scan New
Data.

Clearing Trouble Codes

1. Make sure the EZ-Scan 3000
scanner cable is correctly con-
nected to the scanner and to the
vehicle, the engine is OFF, and
the vehicle ignition key is ON,
then press POWER.

2. Press DATA to display the Data menu.

3. Press the ENTER key to
Clear Codes. Press the
Data key to Exit will be dis-
played on the screen. Press ENTER to
clear all the codes in the vehicle's
computer. (Pressing DATA again will
take the unit out of Data mode and
display the opening screen.)

4. After the codes have been cleared,
Function Successful will be
displayed. Press DATA to display the
opening screen.

Page 20

Reset EMR Lamp-Chrysler (1989-95)

Before You Start

[Chrysler] The Engine
Maintenance Repair (EMR)
lamp reset feature is only
available on Chrysler trucks,
vans, and 1991 and later
Jeeps.

Resetting the EMR Lamp

1. Make sure the EZ-SCAN scanner
cable is correctly connected to
the scanner and to the vehicle,
the vehicle engine is OFF, the
vehicle ignition key is ON, then
press POWER.

2. Press DATA to display the Data
menu. Use the arrow keys until
4 -EMR Reset is highlighted,
then press ENTER.

3. ENTER to Clear will be dis-
played on the screen. Press
ENTER to reset the EMR lamp.
(Pressing DATA again will take
the unit out of Data mode and
display the opening screen.)

4. After the EMR lamp has been
reset, Function Successful
will be displayed. Press DATA to
display the opening screen.

RutoXray 3000
ICHRY '95 UIN=C

Page 21

Capture Mode - GM, Chrysler OBD-I

Before You Start

• Use Capture Mode to help diagnose intermittent problems
that occur while driving the vehicle by capturing data before,
during, and after a problem occurs.

NOTE: [GM] On carbureted vehicles and a few fuel injected vehi-
cles, the on-board computer is placed into Service Mode, a mode
which fixes the timing and the idle speed. If the idle speed on your
fuel injected vehicle is affected during scanning, AutoXray recom-
mends that you do not drive your vehicle while it is scanned.

• Your vehicle must be scanned before using Capture Mode.
If ENTER is pressed to select 1 -Capture Mode, and the
vehicle has not been scanned, the scanner will display
Press the Scan key to
Scan New Data.

CAUTION: AutoXray recommends
that the person operating the vehicle
does not use/view the scanner. Always
use an assistant to operate the scanner
while driving the vehicle.

Capturing the Problem

1. Make sure the EZ-Scan 3000 scanner
cable is out of the driver's way, and is
correctly connected to the scanner and
to the vehicle, then press POWER.

2. Press MON to display Monitor menu.
Make sure 1 -Start Capture is
highlighted, then press ENTER.

Page 22

Capture Mode - GM, Chrysler OBD-I (cont.)

3. The screen will display Capture
Mode and then up to seven V sym-
bols. Each '>' symbol represents a
user defined length of time.

NOTE: When Capture Mode is

started, the scanner will begin
displaying '>' symbols. Each
symbol represents two frames
of data. The default setting for
each frame is one second. Refer to "Set the Time Units
for Capture Mode" on page 10 to change the setting.

4. When the scanner is put in Capture Mode it is ready to capture
real-time data (for those problems that only seem to occur inter-
mittently). Press ENTER when the intermittent problem occurs.
The scanner will capture the data at the trigger point, then will
display a T followed by seven '<' symbols as vehicle data after
the trigger is captured and stored.

NOTE: You can press ENTER at any time, even if all seven '>'

symbols are not displayed. The scanner always keeps the
most recent data while waiting for ENTER (trigger point) to
be pressed.

Press MON at any time to abort the capture.

Viewing the Capture Mode Data

Capture Mode data can be
viewed on the scanner, or you
can use EZ-PC (sold separately) to
download the data to your personal
computer to save it and display it
graphically. Data stored on your
computer can be used to keep a
history of data for the vehicle.

Page 23

Capture Mode - GM, Chrysler OBD-I (cont.)

1. Press POWER to display the
EZ-Scan 3000 scanner open-
ing screen.

2. Press MON to display Monitor
menu.

Use the arrow keys until 2 -
View Data is highlighted,
then press ENTER.

3. Data from each sensor will be
displayed on the screen. Use
the ▲ and T arrow keys to
view data changes as you
move up and down the capture
time line. The (-) indicates time
intervals before the trigger
point, and (+) indicates time
intervals after the trigger point.

• Use the -4 and ► arrow keys to
view other sensors.

4. Press MON to exit Capture Mode and
display the opening screen.

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Lpai Locp

FLel SLptan 2

h-bt 3.-ppir"+sd

Load Uake

as-:

Gboiart Tatp

+ N (14 Frames

after Trigger)

= Trigger <=

before Tr'gger)

Page 24

Scan the KOEO Data, Ford - OBD-I

Before You Start

• Before scanning a vehicle, the EZ-SCAN 3000 scanner
must be correctly configured for your vehicle. Refer to
"Setup / Operating Instructions" on page 8 if you need to
configure the scanner.

Key ON, Engine OFF (KOEO) Scan

The KOEO scan causes the vehicle EEC-IV computer to actuate
the sensors and test the different computer controlled functions of
the vehicle. The KOEO test will detect faults at the time of testing
(hard faults) and intermittent faults

stored as Memory Codes.

1. Run the engine until it is at nor-
mal operating temperature.

2. Make sure ALL electrical loads
(air conditioning, radio, blower
fan, etc.) are OFF.

3. Connect the EZ-SCAN 3000
scanner cable to the scanner and
to the vehicle EEC-IV computer
connector, then press POWER to
display the EZ-SCAN 3000 scan-
ner opening screen.

4. Make sure the vehicle ignition
key has been OFF for at least
ten seconds. Turn the ignition
key to ON, then press SCAN.

• Vehicles that support DCL
will display a Scan menu.
Make sure

1 -K0E0/K0ER Scan is
highlighted, then press
ENTER.

Page 25

Scan the KOEO Codes, Ford - OBD-I (Cont.)

5. When the scanner is ready to :
will be

displayed on the screen.
Press ENTER to start scan-
ning the vehicle
computer/sensors. (Pressing
SCAN again will take the unit
out of Scan mode and display
the opening screen.)

6. Scanning Data will be dis-
played while the KOEO
codes and memory codes are
retrieved from the vehicle
computer. A normal scan can
take up to three minutes.

7. After the scanner has read
all the data from the vehicle,
the Scan Successful
message will be displayed
on the screen, followed by
the opening screen.

Page 26

the vehicle, ENTER to Scan

Scan the KOER Codes, Ford - OBD-I (Cont.)

Before You Start

Before scanning a vehicle, the EZ-SCAN 3000 scanner
must be correctly configured for your vehicle. Refer to

"Setup / Operating Instructions" on page 8 if you need to
configure the scanner.

• Make sure to read these instructions completely before the
KOER test is started. Several user interactions may be
required during the scan. If these steps are not completed
correctly, the engine computer
will store a Trouble Code as if
the system was not functioning
properly. If one of these trou-
ble codes are stored, repeat
the scan with the necessary
steps to eliminate the problem.
For example, the error RPM
too low during KOER
test can be corrected by
pressing the gas pedal to the
floor during the Dynamic
Response section of the scan.

Key ON, Engine Running (KOER)
Scan

The KOER scan causes the vehicle
EEC-IV computer to test the different
sensors and computer controlled
functions while the vehicle engine is
running.

1. Run the engine until it is at normal operating temperature.

2. Make sure ALL electrical loads (blower fan, air conditioning,
radio, etc.) are OFF.

3. Connect the EZ-SCAN 3000 scanner cable to the scanner and

Page 27

Scan the KOER Codes, Ford - OBD-I (Cont.)

to the vehicle EEC-IV computer con-
nector, then press POWER to display
the EZ-SCAN 3000
scanner opening screen.

4. Make sure the vehicle ignition key
has been OFF for at least ten sec-
onds. Turn the ignition key to start the
engine, then press SCAN.

• Vehicles that support DCL will
display a Scan menu. Make sure
1 -K0E0/K0ER Scan is high-
lighted, then press ENTER.

5. When the scanner is ready to scan
the vehicle, ENTER to Scan will
be displayed on the screen. Press
ENTER to start scanning the vehicle
computer/sensors. (Pressing SCAN
again will take the unit out of Scan
mode and display the opening
screen.)

6. Scanning Data will be displayed
while the vehicle computer is
scanned. A normal scan can take up
to five minutes.

• Vehicles equipped with a Power
Steering Pressure Switch - turn
the steering wheel 1/2 turn and
release, when prompted.

• Vehicles equipped with a

Page 28

Scan the KOER Codes, Ford - OBD-I (Cont.)

Brake ON/OFF Switch - Press and release the brake, when
prompted.

7. If the vehicle is equipped with the
Automatic Transmission, place the
car into Drive and then back into
Park, when prompted.

8. If Dynamic Response is dis-
played, briefly accelerate the
engine to wide open throttle and
release. (Snap throttle)

9. After the scanner has completed
the KOER scan, the Scan
Successful message will be
displayed on the screen, followed
by the opening screen.

If these steps are not complet-
ed correctly, the engine com-
puter will store a Trouble Code
as if the system was not func-
tioning properly. If one of these
trouble codes are stored,
repeat the scan with the neces-
sary steps to eliminate the
problem. For example, the error
RPM too low during
KOER test can be corrected

by pressing the gas pedal to the floor during the Dynamic
Response section of the scan.

Page 29

SCAN the DCL Data, Ford - OBD-I

Before You Start

Before scanning a vehi-
cle, the EZ-SCAN 3000
scanner must be cor-
rectly configured for
your vehicle. Refer to
"Setup / Operating
Instructions" on page 8
if you need to configure
the scanner.

Data Communications Link
(DCL) Scan

This scan displays live opera-
tional data from vehicles that
support DCL. Certain vehicles
from 1989 to 1995 support the
DCL scan.

1. Connect the EZ-SCAN 3000
scanner cable to the scanner
and to the vehicle EEC-IV
computer connector, then
press POWER to display the
EZ-SCAN 3000

scanner opening screen.

2. Turn the vehicle ignition key to
ON or start the engine.

3. Vehicles that support DCL
will display a Scan menu.
Use the ▲ and ▼ arrow
keys until 2-DCL Data
Scan is highlighted, then
press ENTER.

ftji:d4"-3j 3393
FORD '90 UIW=N

Page 30

SCAN the DCL Data, Ford - OBD-I (Cont.)

4. When the scanner is ready to
scan the vehicle, ENTER to
Scan will be displayed on the
screen. Press ENTER to start
scanning the vehicle
computer/sensors. (Pressing
SCAN again will take the unit
out of Scan mode and display
the opening screen.)

5. Initializing will be dis-
played while the DCL scan is
completed. A normal scan can take up to one minute or longer.

6. After the scanner has read all the data from the vehicle, the
Scan Successful message will be displayed on the screen,
followed by the opening screen.

Operational Data Items

To see a description of each of the Operational Data Items for your
vehicle, refer to "Ford DCL Operational Data Items" on page 59.

View the KOEO Data, Ford - OBD-I

Before You Start

• Your vehicle must be scanned before viewing the KOEO
data. If DATA is pressed, and the vehicle has not been
scanned, the scanner will display Press the Scan
key to Scan New Data. Refer to "Key ON, Engine
OFF (KOEO) Scan" on page 25.

The EZ-SCAN 3000 scanner DOES NOT need to be connected to
the vehicle to view the scanned data. The vehicle engine configura-
tion and data will remain in the scanner's memory until a vehicle is
scanned again. This allows you to review the data at a later time,
or to use EZ-PC (sold separately) to load the data into a computer.

Page 31

View the KOEO Data, Ford - OBD-I (Cont.)

1. Press POWER to display the EZ-
SCAN 3000 scanner opening
screen.

2. Press DATA to display the Data
menu. Make sure 1 - KOEO
Codes is

highlighted, then press ENTER.

3. If no faults are detected during the
KOEO test, the vehicle's computer
will store code 11 or code 1 1 1
System Pass.
If a fault is detected, the fault and
its description will be displayed on
the scanner screen. The fault
code number will be displayed in
the upper left corner of the
screen.

• A down arrow on the screen
indicates more information.
Use the ▲ and T arrow keys
to view the additional text.

• Use the 4 and ► arrow keys
to view any other faults.

4. Press DATA to exit Data mode and display the opening screen.

Page 32

View the Memory (Trouble) Codes - Ford

Before You Start

• Your vehicle must be scanned before viewing the data. If
□ATA is pressed, and the vehicle has not been scanned,
the scanner will display Press the Scan key to
Scan New Data. Refer to "Key ON, Engine OFF (KOEO)
Scan" on page 25.

• Memory Codes are intermittent faults that are detected by
the vehicles computer during normal operation, and are
stored in memory.

1. Press POWER to display the EZ-SCAN 3000 scanner opening
screen.

2. Press DATA to display the Data
menu. Use the ▲ and T arrow
keys until 2 -Memory Codes is
highlighted, then press ENTER.

3. If no Memory Codes are in the
vehicle's computer, code 1 1 or code
111 System Pass will be dis-
played.

If a Memory Code is detected, the
fault and its description will be dis-
played on the scanner screen. The
fault code number will be displayed in
the upper left corner of the screen.

• A down arrow on the screen
indicates more information.
Use the ▲ and T arrow keys
to view the additional text.

• Use the -4 and ► arrow keys
to view any other faults.

4. Press DATA to exit Data mode
and display the opening screen.

Page 33

View the KOER Codes - Ford

Before You Start

• Your vehicle must be scanned
before viewing the KOER data. If
□ATA is pressed, and the vehicle
has not been scanned, the scanner
will display Press the Scan key
to Scan New Data. Refer to
"Key ON, Engine Running (KOER)
Scan" on page 27.

1. Press POWER to display the EZ-SCAN
3000 scanner opening screen.

2. Press DATA to display the Data menu.
Use the ▲ and ▼ arrow keys until 3-
KOER Codes is highlighted, then
press ENTER.

3. If no KOER faults are in the vehicle's
computer, code 11 or code 1 1 1
System Pass will be displayed.

If a fault is detected, the fault and its
description will be displayed on the
scanner screen. The fault code number
will be displayed in the upper left corner
of the screen.

• A down arrow on the screen indi-
cates more information. Use the
▲ and T arrow keys to view the
additional text.

• Use the -4 and ► arrow keys to
view any other faults.

4. Press DATA to exit Data mode and dis-
play the opening screen.

Page 34

View the DCL Data - Ford

1- MCED Ctttes

2- Memcry Codes

3- MCER Codes

4- Clear Cote

5- DCL Data

6- EZ-FC

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Before You Start

• Your vehicle must be scanned
before viewing the data. If
□ATA is pressed, and the vehi-
cle has not been scanned, the
scanner will display Press
the Scan key to Scan
New Data. Refer to "Data
Communications Link (DCL)
Scan" on page 30.

The EZ-SCAN 3000 scanner DOES
NOT need to be connected to the
vehicle to view the scanned data. The
vehicle engine configuration and data
will remain in the scanner's memory
until a vehicle is scanned again. This
allows you to review the data at a later
time, or to use EZ-PC (sold separately)
to load the data into a computer.

Viewing the DCL Data

1. If the EZ-SCAN 3000 scanner is not
ON, press POWER to display the
opening screen.

2. Press DATA to display the Data
menu. Use the ▲ and T arrow keys
until

5 -DCL Data is highlighted, then
press ENTER.

3. Information from the DCL computer/

sensors in your vehicle (Operational Data Items) will be
displayed on the

Page 35

View the DCL Data - Ford (Cont.;

scanner screen. A reference number is
displayed in the upper right corner of the
screen. (The total number of sensors and
sensor types will vary with each type of
vehicle.)

NOTE: The -4 and ► arrow keys will
step through the sensors
(1 at a time), and the ▲ and T
arrow keys will page through the
sensors (10 at a time).

4. After viewing the scanned DCL data,
press DATA to exit Data mode and dis-
play the opening screen.

Monitoring Real Time Data

1. Make sure the EZ-SCAN 3000 scanner
cable is correctly connected to the
scanner and to the vehicle, then press
POWER.

2. Press DATA to display the Data menu.
Use the ▲ and T arrow keys until 5 -
DCL Data is highlighted, then press
ENTER.

3. To toggle real-time monitoring ON and
OFF, press MON.

4. An Initializing screen will be
displayed while the scanner establishes
a connection to the computer/sensor.

5. When the connection has been made,
the reference number in the upper right
corner will begin to flash.

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Page 36

Monitoring Real Time Data - Ford (Cont.)

NOTE: If the communication link with the vehicle is broken during
Monitor mode, the number in the lower right corner will
stop flashing.

6. Use the -4 and ► arrow keys to step through the sensors (1 at a
time), and the ▲ and T arrow keys to page through the sensors
(10 at a time) to view their real-time data.

7. When you are done viewing real-time data, press MON. The
number in the upper right corner will stop flashing.

8. Press DATA to exit Data mode and display the opening screen.

Clear Trouble Codes - Ford

Before You Start

• Clearing Trouble Codes will remove any Trouble Codes
from the vehicle's computer. You can use this feature to
make sure vehicle repairs were done correctly by doing a
new scan after clearing the codes.

• Your vehicle must be scanned before clearing trouble
codes. If DATA is pressed, and the vehicle has not been
scanned, the scanner will display Press the Scan
key to Scan New Data. Refer to "Key ON, Engine
OFF (KOEO) Scan" on page 25, "Key ON, Engine Running
(KOER) Scan" on page 30, or "Data Communications Link
(DCL) Scan" on page 30.

Clearing Trouble Codes

1. Make sure the EZ-SCAN 3000 scanner cable is correctly con-
nected to the scanner and to the vehicle. Turn the vehicle igni-
tion key OFF for at least 10 seconds, turn the key ON, then
press POWER.

2. Press DATA to display the Data menu. Use the ▲ and T arrow

Page 37

Clear Trouble Codes - Ford (Cont.)

keys until 4 -Clear Codes is highlighted, then press ENTER.

3. ENTER to Clear will be displayed on the screen. Press
ENTER to clear all the codes in the vehicle's computer. (Pressing
□ATA again will take the unit out of Data mode and display the
opening screen.)

4. After the codes have been cleared, Function Successful
will be

displayed. Press DATA to display the opening screen.

Activate the Wiggle Test - Ford

Before You Start

• The wiggle test, or continu-
ous monitor test, allows you
to test sensor systems for
intermittent faults. Activating
the wiggle test, then tap-
ping, wiggling, or moving
suspect

wires or sensors may reveal
an intermittent short or open
in the circuit.

CAUTION: Do not drive the
vehicle while doing this test.

1. Make sure the EZ-SCAN 3000
scanner cable is correctly con-
nected to the scanner and to the
vehicle. Turn the vehicle ignition
key OFF for at least 1 0 seconds.

Page 38

Activate Wiggle Test - Ford (Cont.)

• For a KOEO Wiggle Test, turn
the key ON, then press POWER.
• For a KOER Wiggle Test,
start the engine, then press
POWER.

2. Press MON to display Monitor
menu. Make sure 1 -Wiggle
Test is highlighted, then press
ENTER.

3. ENTER to Test will be dis-
played on the screen. Press
ENTER to start the wiggle test.
(Pressing MON again will take
the unit out of Monitor mode and
display the opening screen.)

4. Tap, wiggle, or move wires and
sensors to detect a fault.

5. FAULT will be displayed if a fault
is detected during the test.

NO FAULT will be displayed if
there are no faults detected during
the test.

6. Press MON to exit the Wiggle
Test and display the opening
screen.

NOTE: If a fault was detected, run
a KOEO test, then check
the Memory Codes to see
the error.

NOTE: Only applies to cars equipped with DCL.

Wiggle Test Mode

Page 39

DCL Data Capture - Ford

Before You Start

• Use Capture Mode to help diagnose intermittent problems
that occur while driving the vehicle by capturing data before,
during, and after a problem occurs.

CAUTION: AutoXray recommends that the person operating the
vehicle does not use/view the scanner. Always use an assistant to
operate the scanner while driving the vehicle.

Capturing the Problem

1. Make sure the EZ-SCAN 3000 scan-
ner cable is out of the driver's way,
and is correctly connected to the
scanner and to the vehicle, then
press POWER.

2. Press MON to display Monitor menu.
Use the ▲ and T arrow keys until
2-DCL Capture is highlighted,
then press ENTER.

3. Make sure 1 -Start Capture is
highlighted, then press ENTER.

4. The screen will display Capture
Mode and then up to seven '>' sym-
bols. Each V symbol represents a user
defined length of time.

Page 40

DCL Data Capture - Ford (Cont.)

NOTE: When Capture Mode is
started, the scanner will
begin displaying '>' sym-
bols. Each symbol repre-
sents two frames of data.
The default setting for
each frame is one sec-
ond. Refer to "Set the
Time Units for Capture
Mode" on page 1 0 to
change the setting.

5. When the scanner is put in
Capture Mode it is ready to
capture real-time data (for
those problems that only seem
to occur intermittently). Press
ENTER when the intermittent
problem occurs. The scanner
will capture the data at the trigger point, then will display a T
followed by seven '<' symbols as vehicle data after the trigger is
captured and stored.

NOTE: You can press ENTER at any time, even if all seven '>'

symbols are not displayed. The scanner always keeps the
most recent data while waiting for ENTER (trigger point) to
be pressed.

Press MON at any time to abort the capture.
Viewing the Capture Mode Data

Capture Mode data can be viewed on the scanner, or you can use
EZ-PC to download the data to your personal computer to save it
and display it graphically. Data stored on your computer can be
used to keep a history of data for the vehicle.

Page 41

DCL Data Capture - Ford (Cont.)

1. Press POWER to display the
EZ-SCAN 3000 scanner opening
screen.

2. Press MON to display Monitor
menu. Use the ▲ and ▼ arrow
keys until 2 -DCL Capture is
highlighted, then press ENTER.

3. Use the ▲ and T arrow keys
until 2-View Data is high-
lighted, then press ENTER.

4. Data from each sensor will be
displayed on the screen. Use
the A and T arrow keys to view
data changes as you move up
and down the capture time line.
The (-) indicates time intervals
before the trigger point, and (+)
indicates time intervals after the
trigger point.

• Use the 4 and ► arrow
keys to view other sensors.

5. Press MON to exit Capture
Mode and display the opening
screen.

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Page 42

Troubleshooting

This section contains the following Troubleshooting subjects:

• What to do When the Scanner Displays a Fault/Trouble Code

• What to do for a "Vehicle Is Not Responding" Message

• Screen Contrast Problems

• How to Reset the Scanner
Scanner Screen Menu Trees

What to do When the Scanner Displays a
Fault/Trouble Code

NOTE: AutoXray recommends obtaining a service manual or
repair manual to assist in automotive diagnostics.
Manuals are available at your local parts store, book
store, or library.

1. Check the connection to the sensor.

2. Look for obvious damage to any wires or vacuum hoses.

3. Locate a service or repair manual to look up the troubleshooting
tree for that fault code.

4. Follow the tree to determine the cause of the code.
NOTE: Remember, the sensor itself is not always the cause of

the trouble code.

What to do for a "Vehicle Is Not Responding" Message

1. Make sure the vehicle ignition key is in the full ON position (not
ACC) and is making contact.

2. Make sure the diagnostic connector is clean.

3. Make sure the cable connectors are pushed in firmly.

4. Make sure the pins in the connectors are not bent and are
making contact.

5. Make sure the year and VIN are correctly entered.

6. Try wiggling the connector during the attempted scan.

Page 43

Troubleshooting (cont.)

"Vehicle Is Not Responding" Message (continued)

Check the following "Manufacturer Specific" items:

[Ford] Make sure to connect both the multi-wire and the
single-wire connectors to the AutoXray cable.

• [Ford] At the beginning of a KOEO test, listen for solenoids
clicking under the hood.

[Ford] Make sure the vehicle is fully warmed up before
attempting the KOER test and give enough time to bring up
"Scan Successful".

• [GM] Answer any exception questions correctly.

• [GM] On carbureted models, make sure the Check Engine
Light is rapidly flashing during the attempted scan.

Screen Contrast Problems

Some users have experienced problems concerning screen
contrast with newer batteries like the Duracell Ultra. These
batteries produce a higher than normal voltage and can affect
the scanner screen contrast, making the screen difficult to read.
We apologize for the inconvenience. If you encounter this
problem, run your scanner for approximately 2 hours to run off
the high voltage causing the problem. (It will be necessary to
press a key occasionally to override the EZ-SCAN scanner
power miser function.)

NOTE: After these batteries reach their rated voltage (1 .5V) the
battery life should still be approximately 500 hours.

How to Reset the Scanner

1. Power Scanner on.

2. Open the battery compartment and remove one battery.

3. Hold down POWER for 5 seconds.

4. Put the battery back in, and power on.

Page 44

GM Operational Data Items

A/C - Air Conditioner

ECM - Electronic Control Module

EGR - Exhaust Gas Re-circulation Valve

MAP - Manifold Absolute Pressure

TPS - Throttle Position Sensor

A/C (Enabled / Disabled)

If the ECM is commanding the A/C Clutch to engage, this parameter should
indicate ENABLED, otherwise this parameter should indicate DISABLED.

A/C Clutch (Engaged / Disengaged)

An indication that the ECM has sent a command to engage the air
conditioning clutch after receiving the instrument panel request and
determining that conditions are appropriate for air conditioning operation.

A/C Clutch Relay (On / Off)

The ECM will command more A/C pressure by turning the A/C clutch
relay ON.

A/C Evap Temp (°F) Range: 20° to 90 °

Air conditioning evaporator temperature, used by the ECM to prevent
evaporator freeze-up.

A/C Low Pressure (Detected / Not Detected)

An indication of whether adequate pressure is available to operate the air
conditioning system. When detected the pressure has dropped below a
safe limit and system operation is halted.

A/C Pressure (psi) Range: 25 to 460 psi

An indication of air conditioning pressure from the high pressure side of
the system. On 1988 and newer engines.
A/C Press Fan 2 (On / Off)

When the A/C is active the ECM will command the fan 2 output relay to
energize to compensate for added engine load and the parameter should
indicate ON. Otherwise, the parameter should indicate OFF.
A/C Request (Requested / Not Requested)

An indication that the ECM has received the instrument panel request to
turn on the air conditioning. See A/C Clutch.

Air Divert (On / Off)

An indication of whether air has been diverted to the atmosphere to

Page 45

GM Operational Data Items

protect the catalytic converter at wide open throttle in some engines with
carburetors. A reading of ON indicates that air has been diverted.
Air Fuel Mixture Range: 0 to 25.5

The air to fuel mixture, as calculated by the ECM. The ideal mixture is
14.7 to 1.

Air Switch (On / Off)

An indication of where air from the air pump has been directed in engines
with an air management system. ON means that air has been directed
to the air switch for further distribution. OFF means that air has been
directed to the atmosphere.
Async Mode (Yes /No)

An indication of whether extra fuel has been provided during wide open
throttle operation. The extra fuel is provided by triggering extra injector puls-
es which are out of synchronization (asynchronous) with the regular pulses.
Barometric Press (Volts) Range: 0 to 5 Volts

Barometric pressure. Displayed in volts or kPa. The input is used to help
the ECM compensate for changes in altitude.

Battery Voltage High: (Yes / No)

If the charging system voltage has exceeded a pre-set value (value
depends on controller package) the screen should indicate YES. For
normal operation, the screen should indicate NO.
Battery Voltage Low: (Yes / No)

An indication of whether the battery voltage has fallen below an
acceptable level.

Battery Voltage (Volts) Range: 0 to 25 Volts

The reading is calculated by the ECM. A normal reading should be 13.8 to
14.5 when running.

Block Learn or Long Term Fuel Trim

A memory file of blocks representing engine load and speed in which a
fuel delivery rate is stored. Ideally, a reading of 128 would display
indicating that no fuel correction is needed. A range of 0 to 127 indicates
that fuel is being subtracted. A range of 129 to 255 indicates that fuel is
being added. It is a long term fuel compensator that operates in
conjunction with the integrator in correcting fuel delivery. Also see
Integrator.

Page 46

GM Operational Data Items

Boost Duty Cycle (Duty Cycle %) Range: 0 to 100%

This parameter represents the duty cycle of the wastegate towards boost

pressure. A boost duty cycle of 100% means that the wastegate is

completely closed and all exhaust is routed through the turbocharger, at

the same time the wastegate duty cycle should be 0%.

Brake Depressed (Yes / No)

An indication that the brake pedal is pushed in.

Cam Count (Counts) Range: 0 to 255 Counts

This parameter represents a counter triggered by the camshaft sensor
signal.

Cam Pulse (Detected / Not Detected)

Whenever the cam position sensor is sensed by the ECM it will indicate a
value of DETECTED.

Catalytic Temp (°F) Range: 0° to 1832°

The catalytic converter temperature as calculated by the ECM.

CCP Duty Cycle (% of On Time) Range: 0 to 100%

The percentage of time that the vapor absorbing charcoal canister has
received an ON command.
CCP Purge (Yes / No)

An indication of whether the engine's vapor absorbing charcoal canister
has been signaled to purge its contents during normal engine operation.
See CCP Duty Cycle.
Check Engine Light (On / Off)

This reading corresponds to the CHECK ENGINE or SERVICE ENGINE
SOON light on the dashboard.
Clear Flood Mode (Yes / No)

An indication that the accelerator pedal is pressed to the floor with the
engine off to clear a flooded engine during a restart.
Clutch Depressed (Yes / No)

An indication by the ECM of whether the clutch is pushed in or not.

Coolant Temp (°F) Range: -40° to +389°

Coolant temperature. This reading should increase as the engine warms.
Cruise Control (On / Off)

The operating status of the cruise control system is available for engines

Page 47

GM Operational Data Items

that use the ECM as part of the cruise control system.

Cruise Set Speed (MPH) Range: 0 to 255 MPH

This parameter represents the speed target for the speed control system.
This is the speed the ECM is attempting to maintain.

Desired A/F Mix (Ratio) Range: 0 to 25.5

This parameter represents the ideal air/fuel ratio calculated by the ECM
given the current operating conditions. This value is normally 14.7, but
can change depending on operating conditions. This value should
be used along with the actual air/fuel value to make sure the mixture
solenoid is working correctly.

Desired Boost (kPa) Range: 0 to 200 kPa

The controller calculates the boost level to obtain above the current
barometric pressure in order to maintain desirable manifold absolute
pressure. Applies to turbocharged vehicles only.

Desired EGR Posn (% Open) Range: 0 to 100%

This parameter represents the percentage opening of the EGR valve that
the ECM has calculated for current operating conditions. This parameter
can be compared to the actual EGR position for operational verification
(see EGR Position).

Desired Idle (Steps) Range: 0 to 255 Steps

This parameter represents the number of steps from a closed valve (no
idle control). This item can be compared to the actual valve position to
see that the valve and solenoid are operating properly and correlates to
the ECM commands.

Desired Idle Pos (Steps) Range: 0 to 255 Steps

The desired number of steps for the idle air control motor to reach a
desired idle speed in a fuel injected engine. See Learned Idle Pos.
DFCO Spark Delay (Active / Inactive)

Deceleration Fuel Cut Out spark delay will be ACTIVE during periods of
deceleration.

Engine Cranking (Yes / No)

An indication that a signal has been sent to prepare the engine for starting
that is triggered when the key is in the start position. It should display
when the key is turned to the start position.

Page 48

GM Operational Data Items

Engine Coolant Light (On / Off)

When the ECM detects a low coolant level it will indicate an ON condition.
Normal operating mode is OFF.

Engine Hot Light (On / Off)

A detection of an engine hot condition will show ON. Normal operating
mode is OFF.

Engine Load Range: 0 to 255

This replaces the MAP sensor on some engines. Indicates the grams of
air displaced per cylinder that is used to calculate spark and fuel settings.

Engine RPM

Engine speed displayed in revolutions per minute.
Engine Run Time (Seconds)

The elapsed time that the engine has currently been running, displayed
in seconds.

EGR (On / Off)

If the output vacuum EGR solenoid is being commanded to energize by
the ECM, the screen should read ON. If the ECM is not commanding the
solenoid, the screen should read OFF.

EGR Duty Cycle (% On) Range: 0 to 100%

The amount of time that the solenoid in the exhaust gas re-circulation
valve has been cycled ON. The solenoid is cycled to quickly modulate the
valve and control its air flow.

EGR Position (% Open) Range: 0 to 100%

Vehicles that are equipped with an EGR position sensor can report pintle
position of the EGR valve so that the ECM can verify that the EGR
vacuum solenoid is properly modulating the EGR for desired position.

EGR Solenoid 1,2 or 3 (On / Off)

The solenoid in the exhaust gas re-circulating valve allows exhaust
gasses to pass. Some engines control the gas flow with three solenoids.
ESC Severe Knock (On / Off)

Electronic Spark Control monitors ignition performance. If the ECM
detects a high frequency of knock it will indicate ON. Normal operation is
OFF.

EST (Enabled / Disabled)

Page 49

GM Operational Data Items

Electronic Spark Timing is ENABLED under certain driving conditions.
EVO (On /Off)

On Saturns with power-assisted steering, power steering pressure can
be modulated with the electronic variable orifice (EVO). This valve
changes pressure based on vehicle speed. At slower speeds, the orifice
is commanded ON increasing the power steering pressure, at higher
speeds steering correction is small, therefore less pressure is needed,
the orifice should be commanded OFF

EVO Output (Duty Cycle%) Range: 0 to 100%

This represents the on-time percentage that the ECM has calculated for
Electronic Variable Orifice (EVO valve) given current vehicle speed. The
solenoid is cycled open and closed to modulate desired power steering
pressure. This percentage should correlate to the actual EVO pressure
(i.e. 30% duty cycle means the EVO should be 30% closed).

EVO Feedback (Duty Cycle %)

This parameter feeds the actual open percentage of the EVO back to the
ECM to verify correct solenoid operation. The ECM will make sure that
the actual solenoid command duty cycle matches the feedback duty cycle.
The solenoid is isolated for more accurate fault detection. Range 0 to
100%.

Fan 1 or 2 (Yes / No)

An indication that the electric cooling fan is on and whether it is operating
at low or high speed (for single fan engines). Some engines have two
fans. The second fan provides extra cooling under extreme conditions.

First Gear (Engaged / Disengaged)

If the ECM is commanding first gear, the screen should show ENGAGED.
Otherwise, the screen should show DISENGAGED.

Fourth Gear (Engaged / Disengaged)

If the ECM is commanding fourth gear, the screen will show ENGAGED.
Otherwise, the screen will show DISENGAGED.

Fuel Cut Off (On / Off)

An indication that the ECM has cut off fuel delivery during deceleration.
Fuel Cutoff PN (On / Off)

If the ECM has detected a clear flood condition in fuel injected vehicles,
this parameter should indicate ON. Otherwise, there is no reason to cutoff

Page 50

GM Operational Data Items

fuel and the parameter should indicate OFF.
Fuel Cutoff DR (On / Off)

If the ECM has detected that either the engine speed is too high or
vehicle speed exceeds original tire speed rating, this parameter should
read ON indicating that the ECM has cut off fuel to bring operating
conditions down to a more reasonable level. During normal operating
conditions, this item should indicate OFF.

Fuel Pump Sens (Volts) Range: 0 to 25 Volts

Fuel pump sensor. Displayed in volts. The reading is calculated by the

ECM. It should be about the same as battery voltage for a running engine.
Hi Altitude Air (Yes / No)

If barometric indicates that the vehicle is operating at high altitudes (as
determined by the ECM) the ECM has detected and will compensate for
this condition, and the screen should read YES. Otherwise, the screen
should indicate NO.

High Gear (Engaged / Disengaged)

If the ECM is commanding either third gear or fourth gear (depends on
engine package), the screen should show ENGAGED. Otherwise, the
screen should show DISENGAGED.

History T Codes (Counts) Range: 0 to 255 Counts

The number of history codes stored in the ECM.

Idle Air Coil A or B

An indication of which coil is being controlled by the idle air control motor
during idle.

Idle Air Mtr Pos (Steps) Range: 0 to 255 Steps

Idle air motor position. The idle air control is a throttle bypass that meters air

during the idling of fuel injected engines. The lower the number, the lower the
air flow. As loads are applied to the engine, the reading will increase.

IAC Learned (Yes / No)

This parameter indicates whether or not the ECM has learned the
minimum idle air control position. This should always indicate YES except
after an Idle Air Control system reset when the indication should be NO.

IAC Motor Reset (Yes / No)

An indication of whether the Idle Air Control motor has been returned to a
calibrated position if it has lost its reference count.

Page 51

GM Operational Data Items

Idle Speed Flag (Forward / Reverse)

This will indicate the stepper motor direction for idle control. A FORWARD
reading should indicate a lower idle and less airflow, a REVERSE reading
should represent a higher idle and more airflow.

Injector Pulse (mS) Range: 0 to 1002 mS

Fuel injector pulse width is a measurement of how long the injector is
held open to control fuel flow. Displayed in milliseconds. A higher reading
indicates that the injector is staying open longer and that more fuel is
being injected per pulse. Injector Pulse also serves as the right injector
pulse width on systems with a right and left bank.

Integrator or Short Term Fuel Trim Range: 0 to 255

An indication of fuel delivery made by the ECM during a closed loop
operation. The integrator adds or subtracts fuel, being constantly adjusted
by the oxygen sensor signal. When the exhaust shows an ideal 14.7 to 1
air-fuel mixture, no integrator action is needed and the reading should be
128. If the exhaust is lean, the integrator adds fuel and the reading
increases. If the exhaust is rich, the integrator subtracts fuel and the
reading decreases. The integrator is a short term fuel compensator which
works in conjunction with Block Learn. Also see Block Learn.

ISC Throttle Switch (Open / Closed)

This parameter indicates if the throttle is at idle where idle speed control
should be active. If the ECM has detected an idle condition, this
parameter should indicate CLOSED. In all other open throttle situations,
this parameter should indicate OPEN.

Knock Sensor Range: 0 to 255

Knock activity noted by the ECM. When the value reaches the maximum
of 255, it jumps back to 0 and continues counting upward. It provides an
indication of knock and that a resultant timing adjustment has been made.
If the number is increasing during Monitor Mode, then knock is occurring.
On some engines the value will reset with each correction made.

Knock Retard (Degrees) Range: 0 to 90°

A reading of timing retard that the ECM sends to the ignition module when
engine vibration is detected by a knock sensor. Displayed in crankshaft
degrees of retard to be subtracted from total timing.

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GM Operational Data Items

Learn Control (Enabled / Disabled)

Learn Control should be ENABLED when the Block Learn function is
active based on the ECM. When the ECM has determined that learn
control should be disabled as with an integrator at the calibration limit,
the screen should indicate DISABLED.

Learned Idle Pos (Steps) Range: 0 to 255 Steps

The minimum number of counts needed by the idle air control motor to
reach a desired idle speed.

Left Integrator / Right Integrator Range: 0 to 255

These parameters give integrator (short-term fuel trim) values
corresponding to either the left or right bank of cylinders in multi-bank
engine applications (see Integrator).

Left Block Learn / Right Block Learn Range: 0 to 255

These parameters give block learn (long term fuel trim) values
corresponding to either the left or right bank of cylinders in multi-bank
engine applications (see Block Learn).

Left Oxy Sense / Right Oxy Sense (mV) Range: 0 to 1200 mVolts

These parameters give the oxygen sensor values corresponding to either
the left or right bank of cylinders in multi-bank engine applications (see
Oxygen Sensor).

Left 02 Cross Counts / Right 02 Cross Counts Range: 0 to 255 Counts

These parameters give the oxygen sensor cross count values
corresponding to either the left or right bank of cylinders in multi-bank
engine applications (see 02 Cross Counts).
Loop Status (Open / Closed)

An open reading indicates an open loop in which the ECM controls the
air-fuel mixture from pre-stored table values. A closed reading indicates a
closed loop in which the ECM controls the air-fuel mixture from the
oxygen sensor and other sensors.

Low Oil Light (On / Off)

If the engine oil level reaches a minimum point of safety, the ECM will
indicate ON. Normal operation would be indicated by OFF.

Low Oil Pressure (Yes / No)

If the engine oil pressure reaches a minimum point of safety, the ECM will

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GM Operational Data Items

indicate YES. Normal operation would be indicated by NO.
An indication by the ECM of a logged fault (malfunction) code.

Mass Air Flow (Grams/Sec) Range: 0 to 105 gr/sec

High Pert. Vehicles: 0 to 255 gr/sec

Mass air flow sensor input is used by the ECM to calculate fuel delivery.
As the air flow increases, the fuel delivery must also increase. Displayed
in grams per second.

MAP (kPa or Volts) Range: 10 to 105kPa, or 0 to 5 Volts

Manifold absolute pressure. Displayed in kilopascals, a unit of metric
pressure or volts. The reading should be low when the pressure is low
(and the vacuum is high).

Manifold Air Temp (°F) Range: -40° to + 389°

Manifold Air Temperature.

Mixture Control (% On Time) Range: 0 to 100% (0 to 60° of dwell)

For engines with computer controlled carburetors that set the air-fuel
mixture by energizing or de-energizing the solenoid. Displayed as a
percentage of duty cycle. A consistently low reading indicates that the
solenoid is allowed to stay off for longer periods for a richer mixture.

02 Cross Counts

Oxygen sensor crossover reading, which is the number of times that the
sensor has switched back and forth between lean and rich conditions
since the last data-stream was sent.
Oil Level Low (Yes / No)

When the oil level reaches a minimum margin of safety the ECM will
indicate YES. Normal operating mode is NO.

Oil Temp (°F) Range: -40° to +419°

The temperature of the oil in the bottom of the oil pan.

Oxygen Sensor (mV) Range: 0 to 1200 m Volts

Displayed in millivolts. A low reading (less than 500 mV) indicates a high
oxygen level in the exhaust stream and a lean exhaust. Some engines
have separate sensors for the left and right exhaust manifolds.
Park/Neutral (Yes / No)

This display indicates whether or not the transmission is in Park or Neutral.

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GM Operational Data Items

Power Str Press (Volts) Range: 0 to 25 Volts

The power steering pressure switch is an input that allows the ECM to
compensate for a high pressure condition by de-energizing the A/C clutch
or increasing idle speed.
Power Str PSI High (Yes / No)

An indication to the ECM to increase the engine idle speed due to
additional load placed on the engine by the power steering pump.
PROM ID

The PROM is the identification number of the part of the ECM containing
the factory running parameters. If changing the ECM, the PROM ID is
necessary to keep the factory programming for that vehicle.

Proportional 02 Step (Rich / Lean)

This parameter indicates the adaptive fuel corrective direction the
controller is taking. This item should represent the opposite of rich/lean
state parameter.

QDM 1, 2, 3, 4, A, B, C, or D (High / Low)

The quad driver, located in the ECM. This reading confirms that the ECM
command to the quad driver to operate various high current devices has
been carried out. A reading of LOW indicates that the command was sent to
the device. A reading of HIGH indicates that it has not been carried out. It is
used for QDM 1 , 2, 3, 4, A, B, C, or D for the various subdivisions of the
quad driver. Refer to the vehicle service manual for testing QDM devices.
Rich Lean Flag (Rich / Lean)

This parameter gives the rich/lean state which is detected by the Oxygen

sensor. When the state is lean fuel is added to the system. When the state

is rich fuel is subtracted from the system.

Rt Rich Lean Flag / Lf Rich Lean Flag (Rich / Lean)

These parameters give the rich/lean state values corresponding to either

the left or right bank of cylinders in multi-bank engine applications (see

Rich Lean Flag).

Second Gear (Engaged / Disengaged)

If the ECM is commanding second gear, the screen should show
ENGAGED. Otherwise, the screen should show DISENGAGED.

Shift Light (On / Off)

The shift light is a dash indicator on some manual transmission vehicles

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GM Operational Data Items

which illuminates when the driver is supposed to shift (as determined by
the ECM). If the light is being commanded ON the screen will display ON,
if the light is not being commanded ON the screen will display OFF.
Spark Advance (°) Range: -90° to +90°

The amount of spark advance or timing from the ignition module.
Displayed in crankshaft degrees.

Start Up Coolant Temp (°F) Range: -40° to + 389°

The temperature of the coolant when the engine is started, displayed in
°F After starting a cold engine, this reading and the Coolant Temp reading
should be the same, however, the start-up temperature value will not
change until the engine is started again.
TCC Status (Locked / Not Locked)

Torque converter clutch command. When ON, the TCC is locked to
eliminate fluid slippage and improve fuel economy. The reading indicates
whether or not the command to engage the TCC has been sent.

TCC Duty Cycle (% Open) Range: 0 to 100%

The duty cycle of the solenoid that controls torque converter pressure. In
percentage of open, 100% is fully open (low pressure).
TCC Clutch (Engaged / Disengaged)

An indication whether or not the torque converter clutch is engaged.

TCC Slippage (RPM) Range: +254 to -254 RPM

The amount of slippage between the engine and the transmission. When
the torque converter is on, the slippage should be small. Displayed in
RPM.

TCC Solenoid (On / Off)

This item shows the ECM command to the torque converter clutch
output solenoid. Use TCC Status to make sure the torque converter has
actually engaged.

Third Gear (Engaged / Disengaged)

If the ECM is commanding third gear, the screen should show ENGAGED.
Otherwise, the screen should show DISENGAGED.

Throttle Angle (%) Range: 0 to 100%

Displayed as a percentage of throttle opening with 0% being a closed
throttle and 100% being a wide open throttle (some vehicles have wide
open throttle valves of 99%).

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GM Operational Data Items

Throttle Sensor (Volts) Range: 0 to 5 Volts

Throttle position sensor input. Displayed in volts. The reading should be
lowest with the throttle closed and highest at wide open throttle.
Transmission Tmp (°F) Range: -40° to 304°

Some vehicles are equipped with sensors that monitor the transmission
temperature. The ECM will monitor the temperature for overheating.
Turbo Boost (kPa) Range: 0 to 200 kPa

Actual boost pressure added to barometric pressure to maintain a desired
manifold absolute pressure.

Vacuum Sensor (Volts) Range: 0 to 5 Volts

Manifold vacuum. Displayed in volts. The reading should be low when
vacuum is low (and the Manifold Absolute Pressure is high).
VCC Status (Solenoid On / Solenoid Off)

Some Cadillacs after 1985 have Viscous Converter Clutches, this item
should show the ECM command to the output solenoid. This is similar to
the torque converter solenoid, but does not represent the lock up status of
the converter.

Vehicle Speed (MPH)

A signal from the vehicle speed sensor to the ECM that translates
electronic pulses into miles per hour.
Wastegate Bypass (On / Off)

A reading to confirm that the ECM is commanding the wastegate to boost
pressure in some turbocharged engines. Pressure is boosted by turning a
vacuum solenoid ON or OFF to open or close the wastegate.
Wastegate Duty (% On) Range: 0 to 100% (0 to 60° of dwell)

The percentage of time (or degrees of dwell) that a vacuum solenoid
receives the ON command from the ECM to control the amount of boost
in turbocharged engines. The wastegate allows exhaust gases to either
flow through or bypass the turbocharger.

Water Injector (On / Off)

Used on some turbocharged vehicles to inhibit detonation.
Wide Open Throt (Yes / No)

When the TPS reaches a high enough threshold or a wide open throttle
switch has been activated by the throttle kicker in carbureted vehicles,

Page 57

GM Operational Data Items

this parameter should indicate YES. For any other throttle position this
parameter should indicate NO.

Page 58

Ford DCL Operational Data Items

Brake (BOO) (On/Off)

Vehicles with an automatic transmission have a brake switch input state.
When the brake is depressed, ON should be displayed, otherwise the display
will indicate OFF. The brake switch does not apply for manual transmissions.
EGR Feedback (Volts) Range: 0 to 5 Volts

For vehicles that have a EGR valve position sensor, this will show voltage
of the sensor corresponding to pintle position which provides feedback to
the ECM to determine if the EGR is operating properly.
EGR Vacuum Regl (duty cycle %) Range: 0 to 100%

A solenoid on the EGR valve is modulated to send regulated vacuum to
the EGR. Displayed as a duty cycle percentage. Zero percent represents
a closed EGR valve (no vacuum applied to EGR), 100% represents full
open EGR valve (manifold vacuum applied to EGR valve).

Engine Coolant Temp (°F) Range: -40° to 392°

This displays the converted voltage from the Engine Coolant Temperature
sensor to degrees Fahrenheit.
Engine Speed (RPM)

Engine speed based on the crank position input.
High Speed Fan (On/Off)

The high speed fan is the primary fan for cooling transverse mounted
engines. The screen should indicate ON if the ECM is commanding the
high speed fan ON. If the ECM is commanding the fan OFF, the screen
should indicate OFF.

Idle Air Control (duty cycle %) Range: 0 to 100%

The solenoid in the Idle Air Control valve is modulated to control the
amount of air entering the manifold at an idle condition. Zero percent
represents a closed valve (manifold not subject to atmosphere), 100%
represents a full open valve (manifold exposed to atmosphere).
Injector PW (mS) Range: 0 to 20 mS

Amount of on-time base duration (pulse width) for an injector as
determined by the ECM. The longer the duration, the more fuel added.
Pulse width will be less for Sequential Electronic Fuel Injection (SEFI)
because there is an injector for every cylinder. Most Electronic Fuel
Injection, Center Point Injection (CPI) or High Swirl Combustion (HSC)
motors will have longer durations due to only having 1 or 2 fuel injectors.

Page 59

Ford DCL Operational Data Items

Intake Air Temp (Volts) Range: 0 to 5 Volts

Displays the voltage of the temperature sensor which measures the
temperature of the air flowing into the manifold.
Loop Status (Open/Closed)

If the loop status is OPEN, this means that the air/fuel mixture is being
controlled by ECM tables or sensors other than the oxygen sensor. This
is the case in a cold start condition, for example. When the engine coolant
temperature sensor reaches a certain temperature (which depends on
engine controller type) the loop status should transition to CLOSED. In
closed loop, the air/fuel mixture is controlled by the oxygen sensor.
Low Speed Fan (On/Off)

The low speed fan is used in extreme conditions for transverse mounted
engines. The screen should indicate ON if the ECM is commanding the
low speed fan ON. If the ECM is commanding the fan OFF, the screen
should indicate OFF.

Oxygen Sensor (Volts) Range: 0 to 5 Volts

The screen should indicate YES if the transmission selector is in either
Park or Neutral. If the selector is in any other state, the screen should
indicate NO. Applies only for vehicles equipped with automatic
transmissions.

Power Steering PSI High (Yes/No)

This output state should indicate YES if the power steering pump is
active. If the steering system is inactive, the screen should indicate NO.
Spark Advance (°BTDC) Range: -90° to +90°

Base electrical spark advance as determined by the ECM. Displayed in
degrees of crankshaft rotation.

Throttle Position (Volts) Range: 0 to 5 Volts

This reads the voltage from the Throttle Position Sensor.

Vehicle Power (Volts) Range: 0 to 16 Volts

Page 60

Ford DCL Operational Data Items

This reading indicates the total charging system voltage. With the motor
OFF, this value will indicate the voltage of the battery. With the engine
running, this value will indicate the alternator voltage.
Vehicle Speed Sensor (MPH)

Vehicle speed determined from the speed sensor signal input.
WOT A/C Cutoff (Yes/No)

When this switch state indicates YES, the ECM has detected a Wide
Open Throttle condition and is commanding the A/C clutch to disengage.
If the WOT A/C Cutoff is not active the screen should indicate NO and the
clutch is cycling normally.

Page 61

Chrysler Operational Data Items

A/C Pressure (psi)

This parameter shows the A/C refrigerant pressure.
A/C Press Sens (Volts)

The actual A/C pressure is converted from the A/C pressure input sensor
voltage.

A.I.S. Position (Steps)

This indicates the number of steps the PCM has commanded to the idle
stepper motor. The stepper motor controls the idle air flow into the
manifold. The PCM has pre-programmed idle steps for all vehicle
conditions. Range 0 - 255 Steps.

Adapt Fuel #1 (mS)

The additive adaptive fuel is the on-time base pulse width adjustment that
is calibrated at idle conditions. For engine packages with multiple banks,
#1 represents bank 1 injectors. Displayed in milliseconds.
Adapt Factor #1 (%)

The Adaptive Factor is the long term adjustment percentage to the base
pulse width at each adaptive cell. For engine packages with multiple
banks, #1 represents bank 1 injectors.

Baro Pressure (in- Hg)

The barometric pressure is determined either by the MAP sensor during a
key on / engine off condition (TBI / Turbo) or a separate pressure sensor
along with the MAP sensor can also be used to constantly monitor the
barometric pressure.
Batt Temp Sens (Volts)

The battery temperature sensor allows the ECM to monitor the ambient
temperature of the battery.

Battery Temp (°F) Range: -40° to 260°

The temperature read from the converted battery temperature sensor
input voltage.

Battery Voltage (Volts) Range: 0 to 16 Volts

This voltage is the charging system voltage while the engine is running,
and the battery voltage when the engine is OFF.

Boost Goal (psi) Range: 0 to 29 psi

The ECM calculates the boost level to obtain above the current

Page 62

Chrysler Operational Data Items

barometric pressure in order to maintain desirable manifold absolute
pressure. Applies to turbocharged vehicles only.

C1 - C4 Knock Retard (°) Range: 0° to 128°

Using a detonation sensor mounted in the intake manifold, the PCM
can detect knock and compensate for it. Knock retard represents the
computer commanded retard for cylinder #1 , #2, #3, and #4.

Charge Goal (Volts) Range: 0 to 16 Volts

The voltage the charging system is attempting to reach.

Charge Temp (°F) Range: -40° to 261 °

For some MFI and turbo models, air/fuel mixture temperature can have
an effect on the oxygen sensor feedback system by adjusting the injector
pulse width according to temperature. The throttle body temperature
sensor replaced the charge sensor on later models for vapor lock
detection (see Throttle Body Temp).

Charge Temp Sens (Volts) Range: 0 to 5 Volts

The input voltage displayed is used by the PCM to convert to an actual
temperature (see Charge Temp).

Closed Loop (Yes/No)

If Closed Loop is NO, this means that the air/fuel mixture is being
controlled by PCM tables or sensors other than the oxygen sensor. This is
the case in a cold start condition, for example. When the engine coolant
temperature sensor reaches a certain temperature (which depends on
engine controller type) the Closed Loop status should transition to YES.
In closed loop, the air/fuel mixture is controlled by the oxygen sensor.
Cruise Input (Volts) Range: 0 to 1 Volt

The speed control system enabling input voltage, this parameter
represents the switch state of the speed control system on vehicles
equipped with speed control.
Cruise Target (MPH)

Once the speed control in engaged, this parameter should indicate the
control speed. If speed control is disengaged this parameter should
indicate 0 MPH.

Cruise Status (State)

The operating state of the speed control (SC) system should be
displayed. Possible states are as follows:

Page 63

Chrysler Operational Data Items

• DISABLED: SC is disabled and disengaged.

• ENABLED: SC is enabled but not engaged.

• NORMAL: SC is engaged and Cruise mode is active.

• ACCEL: SC is engaged and Acceleration mode is active.

• DECEL: SC is engaged and Deceleration mode is active

Coolant Temp (° F) Range: -40° to 260°

The temperature of the vehicle coolant is used to determine when to
transition into closed loop and to calculate spark advance during cold
starts. The PCM converts the voltage from the sensor to a temperature.
Coolant Temp (Volts) Range: 0 to 5 Volts

The PCM converts the voltage read from the coolant temperature sensor
to a temperature (see Coolant Temp degrees F).

Engine Speed (RPM)

Engine speed based on the distributor reference pulses.

F1 - F3 Start Count (Counts) Range: 0 to 255 Counts

The number of key on cycles since the latest fault (F1), the second latest
fault (F2), and the third latest fault (F3) were set or since all of the codes
have been erased.

Injector Pulse #x (mS) Range: 0 to 20 mS

Amount of on-time base duration (pulse width) for an injector as
determined by the PCM. The longer the duration, the more fuel being
added. Pulse width will be less for Multi-port Fuel Injection (MFI) because
there is an injector for every cylinder. Most Electronic Fuel Injection (EFI)
and Throttle Body Injection (TBI) motors will have a longer duration due to
there only being one or two fuel injectors.

Knock Sensor #x (Volts) Range: 0 to 5 Volts

The knock sensor is located in the intake manifold and will generate a
signal to the PCM if knock is detected. This input is used by the PCM to
retard the timing to eliminate the knock condition. The knock circuit is
disabled at low RPM or in high manifold vacuum conditions, (x) refers to
the bank of cylinders that the detonation sensor represents.
MAP Sensor (Volts / in-Hg) Range: 0 to 5 Volts, or 0 to 60 in-Hg
This sensor is used to monitor atmospheric (key on / engine running) and
manifold absolute pressures in order to calculate manifold vacuum (engine
load). This sensor along with others are used to modify the air/fuel mixture

Page 64

Chrysler Operational Data Items

and spark advance. Higher voltages indicate higher engine load, where
lower voltage represents a deceleration or cruise condition. The in-Hg
value is determined by converting the MAP sensor input voltage to a
pressure. The lower the MAP the higher the manifold vacuum.
Min Throttle Pos (Volts) Range: 0 to 5 Volts

This voltage is the idle TPS voltage which is used as a reference by the
PCM. This voltage is the lowest TPS voltage, so that every movement of
the throttle can be detected. This value is usually around 0.8 Volts.
Module Advance (°) Range: -10° to 70°

Base electrical spark advance as determined by the PCM. The PCM will
use the coolant temperature sensor, engine speed, and vacuum to
determine advance on a cold start. After the engine reaches normal
operating temperature, the PCM will eliminate the coolant temperature
sensor from the calculation.

02 Bank x/ Pos y (Volts) Range: 0 to 1 Volts

The oxygen sensor generates an input voltage corresponding to the
amount of oxygen in the exhaust. The oxygen sensor must reach a
certain temperature before the readings are accurate. In closed loop (see
Loop Status) the PCM will use this sensor for air/fuel mixture adjustments.
This reading is the oxygen sensor reading for single oxygen sensor
vehicles. For vehicles with multiple oxygen sensors, (x) refers to the
first (or the only) bank of cylinders and (y) refers to either the pre- or
post-catalytic position of the oxygen sensor. Pos 1 is the pre-catalytic
position and Pos 2 is the post-catalytic position. A value of 0 to .5 Volts
will indicate a lean mixture, a value of .5 to1 .00 Volts will indicate a
rich mixture.

02 Bank x/ Pos y (State)

The PCM will convert the voltage of the corresponding input sensor to a
mixture state of either RICH, LEAN, or CENTER [see 02 Bank x/ Pos y
(Volts)].

Oil Pressure (psi)

This parameter shows the oil pressure.

Oil Press Sens (Volts) Range: 0 to 5 Volts

The actual oil pressure is converted from the oil pressure input sensor
voltage.

Page 65

Chrysler Operational Data Items

Overall Retard (°)

Range: 0°to 128°

Total amount of spark retard commanded by the PCM in response to a
monitored knock.

The PCM converts the voltage read from the throttle body temperature
sensor to a temperature (see Throttle Body degrees F).

The Throttle Body temperature indicates the fuel temperature in the
throttle body of Single-Point fuel injected vehicles. This information is
used to avoid vapor lock during hot restarts. The higher the temperature,
the wider the injector pulse width. This is known as the charge
temperature on earlier model vehicles.

Throttle Open (% open) Range: 0 to 100%

The Throttle Open parameter is a relative percentage of throttle opening
based on the learned minimum throttle position.

Throttle Posn (Volts) Range: 0 to 5 Volts

The voltage of the sensor mounted on the throttle shaft that relays throttle
position back to the PCM. The throttle position helps determine the
correct air/fuel mixture. At idle the TPS should read in the 0.5 to 1 volt
range, at Wide Open Throttle (WOT) the TPS should read 4 -5 volts.

Total Spark Advance (° BTDC) Range: -10° to 70°

Total Spark Advance is the PCM base advance summed with specified
mechanical advance.

Trans Fluid Temp (° F) Range: -40° to 304°

Starting in 1993, some Chrysler vehicles have a sensor to detect
transmission fluid temperature.

Trans Fluid Sens (Volts) Range: 0 to 5 Volts

The transmission fluid temperature sensor input voltage that the PCM
uses to convert to a temperature.

Vacuum (in-Hg) Range: 0 to 60 in-Hg

The PCM calculated vacuum reading as converted from barometric
pressure and manifold absolute pressure.
Vehicle Speed (MPH)

The PCM reads input from the speed sensor to determine if the vehicle is

Tbody Temp Sens (Volts)

Range: 0 to 5 Volts

Throttle Body (°F)

Range: -40° to 261°

Page 66

Chrysler Operational Data Items

changing speed or idling with the throttle closed.

Wastegate Cycle (% on time) Range: 0 to 100%

For turbocharged vehicles the wastegate is used to keep exhaust gases
from affecting the impeller of the turbine and pass out through the exhaust.
The wastegate solenoid will cycle once desired manifold absolute pressure
has been obtained to prevent overboost. This parameter is displayed as a
percentage that the wastegate is open (on-time).

Water-in-Fuel (Volts) Range: 0 to 5 Volts

This parameter indicates water present in the fuel system. Higher water
content will equate to a higher voltage.

Page 67

Product Warranty

1 . AutoXray warrants to its customers that, on the date the Products are delivered, they shall be
free from defects in manufacture.

2. This warranty shall apply only to defects that appear within 365 days, and which are reported
to AutoXray within 455 days, following the date the Products are delivered.

3. New replacement Products are warranted as new.

4. Reconditioned replacement Products and repaired Products are warranted as new for the
longer of the remainder of the original warranty period or 90 days from the date of delivery of
the repaired or replaced Product.

5. This warranty does not cover defects caused by abuse, mishandling, accident, improper installation
or application, the malfunction of another component or part of any device in which the Products
installed or with which the Product interfaces, or extend to Products which have been modified or
repaired by anyone except AutoXray or its authorized service representative, or to a Product with
respect to which the serial numbers or identification marks have been altered or removed.

6. AutoXray makes no other warranties other than those expressly stated herein.

7. AutoXray's customers' exclusive remedy under this warranty is repair or replacement at
AutoXray's option and such repair or replacement shall satisfy AutoXray's warranty obligation
to its customers whether in contract, tort, negligence, strict liability or otherwise.

8. Prior to returning a Product for warranty adjustment, AutoXray shall require a return authoriza-
tion and will issue a return authorization number. The return authorization number shall be
placed conspicuously on the outer package shipping label. Products returned to AutoXray
shall be accompanied by a written description of the reasons for return, the circumstances
under which the defect became apparent and the date the defect occurred or, if not known,
the date the defect was discovered.

9. If a returned Product is found not to be defective, AutoXray shall return the product and
invoice for the costs of testing and return shipment.

10. If a returned Product is found to contain a defect which is not covered by this warranty
AutoXray shall provide a written quotation showing the estimated cost of repair or the price of
a replacement. In the event instructions as to the disposition of the product are not received
within 30 days from receipt of such estimate or quotation, AutoXray shall return the product
and invoice for the cost of testing and return shipment.

11 . If a returned Product is found to be defective and such defect is covered by this warranty,
AutoXray shall at its option and at no charge to the customer, repair or replace the Product.
Following such repair or replacement, AutoXray shall return the Product at AutoXray's expense.

You Must Register to receive these great added benefits

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Page 68

Additional Products and Accessories

Scanners

EZ-SCAN 6000

Includes: EZ-SCAN 6000 Scanner, GM OBD-I Cable, Ford OBD-I Cable, Chrysler
OBD-I Cable, OBD-II Cable, OBD-II MFG Specific Cable, EZ-PC 500
EZ-SCAN 5000

Includes: EZ-SCAN 5000 Scanner, GM OBD-I Cable, Ford OBD-I Cable, Chrysler
OBD-I Cable, OBD-II Cable, OBD-II MFG Specific Cable, EZ-Update.
EZ-SCAN 4000

Includes: EZ-SCAN 4000 Scanner, OBD II Cable, EZ-Update
EZ-SCAN 3000

Includes: EZ-SCAN 3000 Scanner, GM OBD-I Cable, Ford OBD-I Cable, Chrysler
OBD-I Cable, EZ-Update.

Code Readers
ez-read 2000

Includes: EZ-READ 2000 Code Reader, GM OBD-I Cable, Ford OBD-I Cable,
Chrysler OBD-I Cable, OBD-II Cable, OBD-II MFG Specific Cable.
EZ-READ 1000

Includes: EZ-READ 1000 Code Reader, OBD-II Cable.

Accessories / Upgrades

EZ-Charge 100 - Battery Conductance tester for use with EZ-Scan. Test for
battery condition and voltage for CCA battery rating system.
EZ-Charge 200 - Battery Conductance tester for use with EZ-Scan. Test for
battery condition and voltage for CCA, CA, EN and DIN battery rating systems.
EZ-PC 500 Kit - enables your Scanner to interface directly with your PC and
AutoXray through the Internet. (Includes Serial Interface cable and CD-ROM software)
EZ-UPDATE 400 - Windows based software enables your AutoXray tools to
interface directly with your PC and Internet. (Includes Serial Interface cable and
CD-ROM software)

Carrying Case - a rugged, impact-resistant, nylon carrying case for individual
scanners or ProPacks

Page 69

Additional Products and Accessories

EZ-SCAN Enhanced OBD-II Software Upgrade

EZ-SCAN OBD-II Upgrade - for OBD-II, upgrades to EZ-SCAN 5000 or

EZ-SCAN 6000.

Internet Access

Visit our Internet web site at www.autoxray.com for the latest
products, accessories, upgrades, and available updates.

Page 70

Notes

Page 71

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